Bees communicate a remarkable amount of accurate info about the amount of food available at a particular source & where that source is. The other bees immediately respond by going there, in appropriate numbers to get it. I don't think people really understand exactly how all this works, but the assumption is that it's probably pretty mechanical. IE, the same way that the tasty sensation maps directly to your swallow action, dancing maps to a bee's "go that way" action.

I think that this is that this is just an assumption based on bees' small brains. We don't really know if how fundamental the difference between bee dance understanding and human language understanding. We don't really know the mechanics of either.